Wall Switches and Input Devices
Wall switches in the DELTA style have one, two or four vertically arranged pairs of buttons. The switches are mounted together with the design wall frame onto a bus coupling unit (BTM) – with no visible fasteners. The electrical connection between the wall switch and BTM is established via the Bus Transceiver Interface. (BTM and design wall frame are ordered separately.)

Wall switches in the DELTA style have one, two or four vertically arranged pairs of buttons. The switches are mounted together with the design wall frame onto a bus coupling unit (BTM) – with no visible fasteners. The electrical connection between the wall switch and BTM is established via the Bus Transceiver Interface. (BTM and design wall frame are ordered separately.)